Field comparison of optical and clark cell dissolved-oxygen sensors

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Abstract

Three multi-parameter water-quality monitors equipped with either Clark cell type or optical type dissolved-oxygen sensors were deployed for 30 days in a brackish (salinity <10 parts per thousand) environment to determine the sensitivity of the sensors to biofouling. The dissolved-oxygen sensors compared periodically to a hand-held dissolved oxygen sensor, but were not serviced or cleaned during the deployment. One of the Clark cell sensors and the optical sensor performed similarly during the deployment. The remaining Clark cell sensor was not aged correctly prior to deployment and did not perform as well as the other sensors. All sensors experienced substantial biofouling that gradually degraded the accuracy of the dissolved-oxygen measurement during the last half of the deployment period. Copyright ASCE 2005.

Additional publication details

Publication type:

Conference Paper

Publication Subtype:

Conference Paper

Title:

Field comparison of optical and clark cell dissolved-oxygen sensors

ISBN:

0784407924; 9780784407929

DOI:

10.1061/40792(173)312

Year Published:

2005

Language:

English

Larger Work Title:

World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress